Cylinder sewing-machine.



No. 695,48I. Patented M-a'r. i8, |902.

` L. UNDERDDNK.

CYLINDER SEWING MACHINE.

(Application tiled Apr. 4, 1898.) (No Modgl.) v 4 Sheets'-Shest"l.

@www

lill|||||llllllllllllllIIIIIIIIIIIIIIIIIIIIIII jun uuulillll i i,l

www

Ja rn en No. 695,4sl. Patented Mar. la, |902.-

L. oNnEnnoNK. l

CYLINDER SEWING MACHINE.

(Application led Apr. 4, 189BI (No Model.) 4 Sheets-Sheet 2.

Wz finesse@ Patented'Mar. I8, |902. L. UNDEBDONK. Y CYLINDER SEWINGMACHINE.

No. 695,48I.

(Appliazion med Apr. 4, leem' 4 Shee`ts-Sheat 3.

(No Model.)

No. 695,481. .Patented ma.l la, |902.

L. uNnEnnuNK.

CYLINDER SEWING MACHINE.

(Appliation led Apr. 4, 1898.\

(.Nu Model.) 4 Sheets-Sheet 4.

fx1/#773632 v y UNITED STATES PATENT OEEICE.

LANSING ONDERDONK, OF NEW YORK, N. Y., ASSIGNOR TO THE UNION SPECIALSEWING MACHINE COMPANY, OF CHICAGO, ILLINOIS, A COR- PORATION OFILLINOIS.

CYLINDER SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 695,481, dated March18, 1902.

Application filed April 4, 1898.

To all whom t may con/cern.-

Be it known that I, LANSING ONDEEDONK,` a citizen of the United States,residing at New York, in the county of New York and State ofN ew York,have invented certain new and useful Improvements in Cylinder Sewing-Machines, of which the following is a description, reference being hadto the accompanying drawings, and to the letters and figures ofreference marked thereon.

My invention relates to an improvement in sewing-machines, andespecially to a sewingmachine of the chain and double-chain stitch type,in which an under-thread-,carrying looper cooperates with a verticallyreciprocating eyepointed thread-carrying needlel to formthe stitch. Y

The present invention has'for its objectto provide a machine of thecharacter describedV in which the parts which are ordinarily arrangedbelow the bed-plate of the machinesuch as the main shaft, feedingmechanism, looper, take-up, dre-may be arranged within a minimum spaceand within a cylindrical bed-plate or casing of very small diameter; andto accomplish this object the Vinvention consists in such an arrangementand construction of parts that great compactness is secured without anydecrease in effectiveness of the working members of the` sewing-machine.

For especial reference to the. featuresin which the present inventionconsists attention is called to the description and drawings and to theappended claims.

The invention is illustrated in theaccom panying drawings, in which-Figure 1 is a side elevation, partly in sec tion, of a sewing-machineembodying lmy inf vention. Fig. 2 is a top plan view, partly in section.Fig.`3 is a frontend View of Fig. 2. Fig. 4 is a sectional front view ofthe forward part of the bed-plate'with its inolos`ed parts. Fig; 5is asectional View on line a: Fig. 2. Fig. 6 is an end view of Fig. 1, someof the parts,4 being removed. Fig. 7 is a section 'on line g/y, Fig. 2.Fig. 8 is a detail view showing the yoke supporting the feed-dog and theconnection to the feed rocking shaft for giv- Serial 110.676,431. (Nomodel.)

ing it the vertical movement. Fig. 9 is an enlarged top plan with thelooper and feed'- dog removed. Fig. l0 is a side view shownary way, andto this is connected the needlebar, as in the well-known Union Specialsewing-machines. `The needle -lever 3 has a downwardly-extending'arm 4,to which is attached, by a' ball-joint, a pitman 5, th rough which aforward-and-backward motion is imparted to the looper, which issupported in the manner hereinafter described. The standard 1 ispreferably provided with a flattened ledge 6,upon which rests the loweredge of the rear end 7 of the cylindrical bed-plate or casing 8, whichis enlarged at its rear end, as shown, and is bolted, by means of screws9, to the Standard l. Passing lengthwise of the bedplate or casing 8 andhaving on its inner end a belt-wheel 10 is the main shaft C, journaledin the standard 1 and in the lug 1l, attached to the cylindrical casingor bed-plate. Upon the vmain shaft is arranged the elongated eocentric13, embraced by a fork 14, the opposite end of said fork being clampedon the looper-supporting shaft A, which has a sliding and rockingmovement in bearings formed .in'lugs 15 16, being oscillated by theeccentricY and fork 13 14 and being reoiprocated through aball-and-socket connection 17 with the pitman 5. At its forward end theloopershaft has removably secured to it in any suitable manner the shankof a looper or loopers 18. Preferably the forward endgof said shaft A isprovided with a-longitudinal opening 19, and the horizontal shank of thelooper is placed therein and held in positionby means of the set-screw20. By the arrangements described it will be noticed that as the mainshaft revolves the looper-shaft A will slide back and forth in itsbearings, giving the forward and backward or loop-taking andloop-leaving movcmentsto the looper,while at the same time anoscillating sidewise or needle-avoiding movement will be given to thelooper.

It will be noticed that the looper-shaft is arranged practically abovethe main shaft, while the feed-shaft B, which I will now describe, isarranged to one side and below the looper-shaft, but above the plane ofthe main shaft, and by this arrangement I am enabled to get the partswithin a small compass.

In the figures, 21 represents the eccentric on the main shaft, engagingthe fork 22 of the sleeve 23,which embraces the feed-shaft B, which isjournaled in the lugs 15 and 16, formed on the wall of the cylindricalcasin g or bed-plate. As the main shaft rotates through the eccentric21, fork 22, and sleeve 23 the shaft B oscillates. At its forward endthe shaft B has secured to it by set-screws 24E a sleeve 25, having ahorizontally-projecting arm 26, which has a right-angular-projectingpivot-pin 2G', the whole forming an arm or pivotal frame D. Pivoted onthis pin 26 is a yoke or part 27, to which, at its upper end, by aset-screw 2S is secured the feed-dog 29, preferably curved to conform tothe periphery of the bed-plate. It will be noticed that as thefeed-shaft B oscillates the yoke or part 27 will be raised up and down,thus giving the vertical movements to the feed-dog 29. In addition tothevertical movements of the feeddog it is of course necessary to provide aforward-and-backward movement, and to this end and to prevent bindingthe yoke F is pivoted, as aforesaid. This yoke or part F has a fork 30at its lower end, and this fork embraces a roller 3l, secured on acrank-pin 32, attached to the forward enlarged end or head 33 of themain shaft C. This head is slotted, andthe crank-pin is adjustableacross its face in the manner described in connection with the patentheretofore granted to the Union Special Sewing Machine Company asassignee of myself, said patent being numbered 547,676 and dated October8, 1895. By adjusting this crank-pin nearer to or farther from the axisof the main shaft it will be noticed that the amount of swing of theyoke F is varied, thus regulating the amount of feed and of course thelength of the stitch. The take-up mechanism is shown in brief at 3st andis of the well-known Union-Special construction and not necessary to behereinafter or particularly referred to, and it, with the feedshaft,rocking eccentric, and means for sliding the looper-shaft, is located inthe enlarged part 12. The end cap 35 of the cylindrical casing orbed-plate may be of the usual construction.

In Fig. 9 another arrangement for operating the looper-shaft is shown.In this the pitman 5 is also directly connected by ball connection withthe rear end of the looper-shaft A, which latter slides in journalsformed on the yoke 36, which yoke has formed with it a fork 37,embracing the eccentric on the main shaft, said yoke being pivoted atits opposite ends upon pins 37, secured in lugs 3S on the wall of thebed-plate or casing.

A machine of this character possesses many advantages, being especiallyuseful where it is desired to sew small articles, as gloves and thelike, on a horn-machine, and while I deem the construction herein shownand described te be the most practical one for crowding into a cylinderof minimum dimensions it will be understood that I- do not wish to berestricted in all the claims to the precise details of construction, asvarious minor modifications and changes in the device may be madewithout departing from the spirit of my invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a sewing-machine, a driving-shaft, a second shaft paralleltherewith with connections between the two for oscillating the latter, afeed-dog carrier pivotally supported on the oscillating shaft, so as tobe raised and lowered as the shaft oscillates, and a crank or eccentriccarried on the forward end of the driving-shaft, which engages thefeed-dog carrier and swings it on its pivot to give the forward andbackward movements to the feeddog; substantially as described.

2. In a sewing-machine, a driving-shaft, a second shaft paralleltherewith, with connections between the two for oscillating the latter,a feed-dog carrier pivotallysupported on the oscillating shaft, so as tobe raised and lowered as the shaft oscillates, and provided with aforked downward extension, a crank or eccentric carried on the forwardend of thc driving-shaft, and which is embraced by the forked extension;substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

LANSING ONDERDONK.

Witnesses:

J. I-I. HOWELL, R. S. Os'wALn.

ICO

